Here’s how it works: you can only book domestic flights the day before departure and within 10 days before departure for international flights. If you live near a Frontier hub-such as Denver, Orlando, and Las Vegas-and like to travel to hike, surf, mountain bike, and explore, the summer pass is likely worth it. The summer pass is a less expensive version of the annual pass, albeit with a shorter travel window. Frontier flies to a number of awesome adventure outposts. International destinations include Belize, Costa Rica, Mexico, and Guatemala. The annual pass is already a tempting proposition, considering the variety of adventurous locales that Frontier services: Reno/Tahoe, Salt Lake, San Diego, and Bentonville, Arkansas, among them. The GoWild! Summer pass is a cheaper version of Frontier’s annual all-you-can-fly pass (the latter is now on sale for $1,299). Buy the GoWild! Pass and you can enjoy an unlimited number of domestic and international flights between May 2 and September 30, 2023. Frontier Airlines is vying for the hearts of budget travelers the airline, which already advertises one-way tickets for $49, just released an “all-you-can-fly” summer pass for $399.

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